Calculator.iOS

Language: Hydrogene, Platform: All, Category: Calculator
https://github.com/remobjects/ElementsSamples/tree/master/Hydrogene/All/Calculator/Calculator.iOS

Calculator.iOS
- References
  - CoreGraphics
  - Foundation
  - libElements
  - UIKit
  - rtl
  - libToffee
- Source Files
- Other Files

RootViewController.cs

using UIKit;
using Calculator.Engine;

namespace Calculator.iOS
{
	[IBObject]
	class RootViewController : UIViewController
	{
		[IBOutlet]
		__weak UITextField edValue;

		public override instancetype init()
		{
			base.initWithNibName("RootViewController") bundle(null);
			title = "Calculator.iOS";
		}

		public override void viewDidLoad()
		{
			base.viewDidLoad();
			// Do any additional setup after loading the view.
		}

		public override void didReceiveMemoryWarning()
		{
			base.didReceiveMemoryWarning();
			// Dispose of any resources that can be recreated.
		}

		[IBAction]
		public void pressBackButton(id sender)
		{
			var s = edValue.text;
			if (s.length > 0)
			{
				s = s.substringToIndex(s.length - 1);
				edValue.text = s;
			}
		}

		[IBAction]
		public void pressExitButton(id sender)
		{
			this.dismissViewControllerAnimated(true) completion(null);
		}

		[IBAction]
		public void pressEvaluateButton(id sender)
		{
			try
			{
				var eval = new Evaluator();
				edValue.text = "" + eval.Evaluate(edValue.text);
			}
			catch (EvaluatorError e)
			{
				var alert = UIAlertController.alertControllerWithTitle("Calculator!") message("Error evaluation: "+e.reason) preferredStyle(UIAlertControllerStyle.Alert);
				presentViewController(alert) animated (true) completion(null);
			}
		}

		[IBAction]
		public void pressCharButton(id sender)
		{
			edValue.text += ((UIButton)sender).titleLabel.text;
		}
	}
}

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